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Colour

#153D75

  • #153D75
  • Blue
  • Dark
  • Nearest: Dark slateblue

#153D75 is a blue with RGB values 21, 61, 117 and HSL 215°, 70%, 27%. It is a dark colour, so white text on it reaches 10.7:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#153D75#153D75
HEX#153D75
RGBrgb(21, 61, 117)
RGB (0–1)0.0824, 0.2392, 0.4588
RGB percentages8.2%, 23.9%, 45.9%
HSLhsl(215, 69.6%, 27.1%)
HSV / HSBhsv(215, 82.1%, 45.9%)
CMYK82.1%, 47.9%, 0%, 54.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,391,989
CSS custom property--colour: #153D75;

Brightness & contrast

Relative luminance0.04781WCAG 2.x, 0 is black and 1 is white
Perceived brightness62.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.73:1
Contrast with white10.73:1WCAG normal text: AAA
Contrast with black1.96:1WCAG normal text: Fail
Greyscale equivalent#393939
Inverted#EAC28A

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#1F4277no red cones; affects about 1% of men; ΔE 3.2 from the original
Deuteranopia#083A74no green cones; the most common form, about 1% of men; ΔE 2.1 from the original
Tritanopia#004A53no blue cones; rare, and affects men and women equally; ΔE 35.1 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text10.73:1WCAG large text: AAA
Contrast with black, large text1.96:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 19.4Midnight blue · ΔE 29Steel blue · ΔE 29.3Rebecca purple · ΔE 37Cornflower blue · ΔE 38.2Dark slate grey · ΔE 38.4
Nearest named CSS colourDark slateblue (#483D8B)ΔE 19.42, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#754D15
Analogous#156D75, #1D1575
Triadic#75153D, #3D7515
Split complementary#751D15, #6D7515
Tetradic#75156D, #754D15, #15751D

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#71A1E5
Lighter +30%#4585DE
Lighter +20%#256ACB
Lighter +10%#1D54A0
Darker −10%#0D264A
Darker −20%#05101F
Darker −30%#000000
Darker −40%#000000
More saturated +25%#043A86
Less saturated −25%#264064

Channel breakdown

R21
G61
B117
Red21 (8.2%)
Green61 (23.9%)
Blue117 (45.9%)
Hue215°
Saturation (HSL)69.57%
Lightness27.06%
Dominant channelBlue
Hex per channelR 15 · G 3D · B 75

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Every value on this page was computed from “153d75” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.